We study the generation of auroral kilometric radiation (AKR) using relativistic, electromagnetic, particle simulations. The AKR source region is modeled by two electron populations in the simulation: a cold (200ev) Maxwellian component and a hot (5‐20kev) population possessing a loss‐cone feature. The loss‐cone distribution is found to be unstable to the cyclotron maser instability. The fast extraordinary (X‐mode) waves dominate the radiation and saturate when resonant particles diffuse into the loss‐cone via turbulent scattering of the particles by the amplified X‐mode radiation.
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Wagner et al. (1983) studied this question.
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